Crazy engine light

[OR VietVet]

Little update . I had to update the firmware on my obd link mx plus adapter bluetooth.. this made all the temp speed and volt match what's on the cluster. Like magic . So all I have left is replace O2 sensor .. bank 1 -1 heater code . Running extra ground cable yet also ..

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If all sensors are the same age, do them all.

 

[Woodblocker55]

My voltage runs 13-14.3 v but I sure front and rear fans are running and Bose amp is on . This just a random freeze frame .

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[BG1988]

My voltage runs 13-14.3 v but I sure front and rear fans are running and Bose amp is on . This just a random freeze frame .

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you will have to check with a multi meter you can also check the resistance of the ground with it.. they got one for 5$ at harbor freight

 

[Woodblocker55]

you will have to check with a multi meter you can also check the resistance of the ground with it.. they got one for 5$ at harbor freight

I got one today ..Is there a good technique to check the ground with a multimeter? Like hook it up and pull cable around ?

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[BG1988]

I got one today ..Is there a good technique to check the ground with a multimeter? Like hook it up and pull cable around ?

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the power has to be disconnected other wise you may get a false reading

it has to be on the OHMs reading 200 OHM dial

 

[Woodblocker55]

the power has to be disconnected other wise you may get a false reading

it has to be on the OHMs reading 200 OHM dial

Going to try the 200 Ohm setting on meter ..I just found these grounds under driver's door ..



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[OR VietVet]

Those and any other grounds need to be addressed. That is just "Boliver **** Nasty".

 

[Woodblocker55]

Any pointers on testing ground with meter ? I figured out the 200 ohm setting on meter. Now for my ground to be good should read 0 .. and do I use negative bat cable to engine .. then cable to frame check both ? Any pointers be great .. hopefully getting ground good will stop this mystery reduce engine speed issue .. Its strange worked great for 2 month and bang it's back again ..

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